Automatically controlled pumping apparatus



July 21, 1931. HAUSER 1,815,148

AUTOMATICALLY CONTROLLED PUMPING APPARATUS Filed May 11, 1921 @chpM Patented July 21, 1931 ADALBERT HAUSEIRI, OF NEW YORK, N. Y.

AUTOMATICALLY CONTROLLED PUZMPING APPARATUS Application filed May 11,

My invention relates to a self adjusting pump combination preferably with foot actuated driving means.

In foot actuated instruments as illustraively shown and particularly of the type employing a regulator valve to control the flow of wind, regulated-either by hand or automatically the charge of pressure or vacuum available in the reservoir bellows 10 should be sufiicient for maximum requirement at any instant. The vacuum is produced by operating the treadles through a few strokes vigorously at the outset. Thereafter, the continued operation of the treadles, however, may become increasingly hard and the strain 011 the person may be considerable, if vacuum is not used at least at the rate at which it is produced. Greatly .enhanced resistance is encountered in the endeavor to increase the state of charge or exhaust of the reservoir when the latter is already substantially fully charged or exhausted, rendering arduous and fatiguing the operation of the instrument.

It is accordingly an object of my invention to make it possible to work the driving means such as the treadles easily while leaving in the reservoir at all times vacuum sufficiently high for immediate use when needed.

It is another object to accomplish the result last mentioned with simple, compact, rugged and reliable apparatus of relatively small expense.

Another object is to provide simple means operating to indicate automatically to the user without substantial waste of effort the manner in which the treadles should be worked for efiective operation.

The preferred application of the invention is to a construction of the type including an exhaust bellows and an associated, preferably substantially contiguous reservoir bellows. According to my invention means is provided so inter-relating the exhaust and the reservoir bellows that the exhausting effort upon the latter is automatically decreased in operation of the treadle when a sufiicient degree of vacuum is at 50 hand in the reservoir to meet the maximum 1921. Serial No 468,773.

requirements of the apparatus at any moment.

In a preferred specific application, the ratio of power transmission from the foot treadle to the exhausting bellows is varied automatically with the increasing vacuum in the reservoir. In a specific embodiment a mechanical connection is provided from the movable leaf of the reservoir tothe operating linkage connecting the treadle to the exhaust bellows, which connection automatically regulates the mechanical advantage between the treadle and the exhaust bellows, so that for substantially uniform treadle stroke the effective exhausting stroke of the exhaust bellows will decrease as the vacuum in the reservoir builds up.

A further object of my invention is the combination of an indicator with the parts influenced by the vacuum giving a visible sign how the treadles are to be worked.

In the accompanying drawings in which are shown one or more of various possible embodiments of the several features of the invention:

F ig. 1 is a side elevation, showing the device at the beginning of the stroke with the reservoir under low pressure.

Fig. 2 shows the same elevation at the end of astroke.

Fig. 3 is a front View of Fig. 2, looking in the direction of the arrow.

Fig. 4 is a side elevation at the end of a stroke, the reservoir under high vacuum, the parts set to remove little amount of air.

Referring to Figs. 1 to 4 the exhausting bellows is shown with a fixed blade 58 and a movable blade 1. The reservoir bellows has one leaf afiixed to the fixed leaf 53 and has a movable leaf 2. The two bellows are connected by the usual check valve (not shown) and the movable leaf 1 of the exhaust bellows has the usual check valve (not shown) by which the air drawn into the exhaust bellows is vented in the collapsing stroke thereof. The two bellows are connected in communication with each other and through the wind chest 4 communicate with the air consuming mechanism.

The exhaust bellows is operated from the treadle 3 hinged as at 16 to the floor board 17. Linkage connects the treadle to the movable leaf of the exhaust bellows and includes a curved link 33 pivoted near the upper end of the treadle and pivoted near its lower end at 38 to a link 12, the rear end of which is pivoted as at 37 to the arm 10 formed integral at one end of a rock shaft 32 which extends horizontally along the fixed board 53 of the exhaust bellows and is journaled in bearings 30 and3l. Near the oppo-.

site end of rock shaft 32 is keyed or otherwise atlixed an arm 9, the free end of which is pivoted as at 39 to a curved link 13 ans chored by a hinged eye 35 to the lower end. of the movable leaf lof the exhaust bellows.

An interlock is provided between the two bellows. This comprises a rod 6 which is illustratively shown at 29 near the upper end of the exhaust bellows and preferably at the wind chest and extending downward beyond the end of the reservoir bellows. A link 7 disposed transversely of the reservo1r bellows 2, is connected to the movable leaf 2 by a hinged eye 8 and at its other end by pin connection 18 to the rod 6. A link 11 is connected at one end to the pivot 38 and is pivoted at the other end as at 36 with respect to the rod 6.'

A link lt'is anchored at the foot board and has a connection at 15 by which the foot tirely collapsed by its spring. In operation,

the treadle 3 is alternately depressed and allowed to return to its uppermost position in a familiar manner. depressed, the linkage shifts to the position shown in Fig. 2 drawing the leaf 1 outward to exhaust some air from the reservoir 2 which collapses slightly. The linkage is properly proportioned as suggested in the drawings, to expand the exhausting bellows through its full stroke. When the treadle is released, the exhausting bellows l collapses to the position shown in Fig. 1 and in the repeated operation more and more air is withdrawn from the reservoir 2. As this takes place and the leaf 2 approaches the ;bellows 1, it will be seen that the link 7 is shifted toward the right, shifting the rod 6 about its pivot 29 and thereby moving the link 11 to reduce its angle with respect to link l2.

12 will accordingly be smaller, correspondingly reducing the movement of arm 9 and link 13 and thereby diminishing the stroke of bellows 1. The limiting exhaust position of bellows 2 is shown in Fig. 4:,in which, as

lVhen. the treadle is- The counterclockwise movement of arm 10 caused by the connectlon levers 33 and will be seen, the pivot 86 is brought quite close to the pivot 37.

The movement of the arm 10 and with it of arm 9 in each treadle stroke will be reduced when the reservoir has a high vacuum, as shown, so that the exhaust bellows in this relation has a short stroke to exhaust minimum amount of. air and the treadles :move easily notwithstanding the presence of the high vacuum in the reservoir.

As follows from the described construction, the operating person never encounters a resistance in thetreadles which cannot be readily overcome as soon as the pressure or vacuum reaches a certain degree.

To prevent the vacuum exceeding the desired maximum a safety valve ofknown construction can be applied. In the drawings it is indicatedby o l in Fig. 3..

In the operation of' the device, the. re-

sistance to treadle. operation does not change.

cordingly, some signalis desirable to. let thev operator know when a. sufficient supply. of

vacuum is at hand. For this purpose,a

lever 21 is mounted on thestationary leaf, of the reservoir bellows in the path of the movable leaf 2, which, when the maximum vacuum exists therein is depressed by said movable leaf and moved about its pivot 22 to transmit a thrust through pitman link 20 to.

short arm 24: to expose at the keyboard 27, a se 'ment 28. The appearance of the segment ail ords a signal that. there is a suflicient vacuum in the reservoir.

In .the drawings I have shown only one treadle and pump equipped with my invention. It is understood that asgenerally two treadleswill be used, each onezwill transmit its power through the. equalizer. Ordinarily the high vacuum or air pressure maintained is not applied directly to the player mechanism, but through a known regulating valve which is governed either automatically or by hand.

The embodimentshown in Figs. l-i is illustratively showing an upright treadle drive, but of course other formsof drive also.

can be used.

It is to be noted that while the invention is illustrated in connection with exhaustingviceswhich broadly are to be regarded: as

equivalents although the preferred application is to exhausting apparatus substantially as shown.

It will thus beseen. that-there is herein described apparatus in which the several.

features of this invention are embodied, and which apparatus in 1ts action attains the various objects of the 1nvent1on and is well suited to meet the requirements of practical use.

As many changes could be made in the above construction, and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

I claim:

1. An automatically controlled pumping apparatus comprising in combination with riving means, a pump, a reservoir connected therewith, mechanical means including a pair of adjustable links between said pump and driving means, a regulating member therefor to change automatically during pumping the ratio of power transmission from the driving means to the pump, when with increasing charge, the resistance to the driving means would increase, thereby maintaining available a substantially uniformly high charge to meet the maximum requirements.

2. An automatically controlled pumping apparatus comprising in combination with driving means, a pump, a reservoir connect ed therewith, and mechanical means consisting of a pair of self adjusting links, connected between said pump and foot drive to regulate the amount of pumping automatically during pumping in accordance with the available tension in the reservoir, substantially regardless of the rate of con sumption at any instant, thereby to maintain a substantially uniform high tension at any instant.-

3. An automatically pumping apparatus comprising in combination with driving means, a fluid pump, a reservoir connected therewith, a fluid regulator, and mechanical means including a pair of adjustable links, placed between the driving means and fluid pump to shorten the stroke of the pump relative to the treadle stroke automatically when the fluid tension increases, to maintain a substantially uniformly high fluid tension available, the resistance imposed on the driving means being kept throughout within limits comfortably overcome.

4. In a mechanical playing instrument, in combination, an exhaust bellows, a reservoir bellows, a driving member, linkage connecting said driving member to the movable wall of said exhaust bellows, a pivoted rod connected with respect to said linkage, a link connected to the movable wall of the reservoir bellows for shifting said rod as the vacuum charge in the reservoir bellows changes, said linkage consisting of a member connected to the movable leaf of the controlled fluid exhaust bellows, and an associated member connected to the driving member.

5. A power equalizer for pumping appa ratus comprising in combination with driving means, a fluid pump, a reservoir connected therewith, a pair of links one of which is connected to'the movable wall of the pump, a guide adjustably holding the other link, the common joint between said links being connected to the driving means, means to regulate said link and guide automatically in proportion with the degree of fluid tension existing in the pump in such a way that with increasing fluid tension said two links are brought nearer together and with decreasing tension they are moved apart.

6. A power equalizer for pumping apparatus, comprising in combination with a driving means, a fluid pump, a reservoir connected therewith, a pair of links, one of which is connected to the working wall of the pump, a guide adjustably holding the other link, a connection to the movable wall of the reservoir for the purpose of moving and holding one of the pair of links in place when the reservoir collapses and opens, thus changing the ratio of movement between the driving means and pump. 7

7. An automatically controlled fluid pumping apparatus comprising in combination with driving means, a fluid pump, a reservoir connected therewith, a fluid regulator controlling the consumption of charge, and self adjusting transmission means having a pair of links between the driving means and the fluid pump tending to maintain a substantially uniformly high fluid tension, and automatically reducing the resistance on the driving means when maximum charge is approached.

8. An automatically controlled pumping apparatus comprising in combination with driving means, a fluid pump, a reservoir connected therewith, an adjustable linkage, a pivoted guide for said linkage to vary the mechanical connection between the driving means and the pump to automatically reduce the effective stroke of the pump when the reservoir bellows reaches a condition of maximum charge.

9. An automatically pumping apparatus comprising in combination with driving means, a pump, a driving member, an adjustable linkage connecting said driving member to the movable wall of said fluid pump, a pivoted rod connected with respect to said linkage, and a rod connected to the movable wall of the reservoir and said pivoted rod for shifting said linkage as the fluid tension in said reservoir changes. to effect a compensating variation in the mechanical advantage of the linkage.

10. An automatically controlled pumping apparatus comprising in combination with controlled fluid driving means, an extensional rod thereon, a fluid pump, a reservoir connected there- With, and amechanical self adjusting transmission consisting of a pair of links con neeted between said extensional rod and the movable Wall of the pump, a pivoted rod connected to one member of said links to vary the effective leverage of the linkage, the operation of which depends on the state of available charge to automatically reduce the extreme resistance of the operation, the operation of said means taking place at any part of the driving stroke Without disturbing the operation.

In testimony whereof, ADALBERT HAUSER has signed his name to this specification this ninth day of May, 1921.

ADALBERT HAUSER.

CERTIFICATE OF CORRECTION.

Patent No. 1,815,148. Granted July 21, 1931, to

ADALBERT HAUSER.

' It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, line H5, claim 8, strike out the word "bellows"; and that the said Letters Patent should he read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 27th day of October, A. I). 1931.

M. J. Moore, (Seal) Acting Commissioner of Patents. 

